no, is more like, the program show us the dimension and the line projection, and when you click where you want your line end, all the others lines disappear, is like, extra lines aren't there, they are show, but they doesn't affect the performance, they are like temporal cache, it is show but doesn't do anything, is like when you erase a carpet in windows, but it doesn't erase until you click on refresh the carpet, it is visually there but virtually no, I don't you if you can understand what I mean, I'm pretty sure that is a my laptop's problem, is there any configuration in order to avoid this?
